calderp
Aluminum
- Joined
- Jul 22, 2011
- Location
- New Orleans
I'm designing something that will have 2-3 components running simultaneously and they will need to be variable speed, reversible, and have fairly precisely matched speeds (within say 2%). I have done plenty with DC gearmotors and speed controllers but I've never had an application where I needed to match speeds like this. If I have to I can run them off a single motor and mechanically connect the components but it would be ideal to run three separate motors if I can get them to match RPM. Loads are not huge but I think more than I would expect from stepper motors and I would love to avoid programming anyway. Probably in the neighborhood of 100-200 in-lbs. Is there an off-the-shelf solution to this? Something similar to these constant-speed motors from Mcmaster, but in a gearmotor? McMaster-Carr
Obviously the different loads on the different components would result in a difference in speed were I to just drive the motors off of the same speed control. Is there an easy way to create this feedback loop where voltage is varied to achieve a desired RPM or is this simply not an application for PMDC gearmotors?
Obviously the different loads on the different components would result in a difference in speed were I to just drive the motors off of the same speed control. Is there an easy way to create this feedback loop where voltage is varied to achieve a desired RPM or is this simply not an application for PMDC gearmotors?